Overview
The 1st Indiana Legion was a state militia unit organized under the authority of the special act of May 11, 1861, as part of the Indiana Legion, the official state defense force during the Civil War. The Legion was established to protect Indiana from invasion, assist in recruiting, and enforce state laws. Companies were raised in nearly every county, with regiments and brigades formed primarily in the southern part of the state, where the threat of Confederate incursion was greatest. The companies of the Legion were commonly referred to as “Home Guards.”
The 1st Indiana Legion served the Union cause in a home defense capacity, operating within Indiana’s borders. Its most notable period of activity was during the Confederate raid led by General John Hunt Morgan in the summer of 1863, when Legion units mobilized to defend the state and assist in the pursuit of raiders.
Organization & Service
The Indiana Legion was organized following the passage of the state act in May 1861, which divided Indiana into brigade districts. The 1st Indiana Legion was one of twelve regiments or legions formed, with its companies drawn chiefly from the southern counties. The original plan called for the 3rd, 4th, 5th, 6th, and 9th brigades to constitute the 1st Division under Maj.-Gen. John L. Mansfield, while the 1st, 2nd, 7th, and 8th brigades formed the 2nd Division under Maj.-Gen. James Hughes. However, the full intended organization was never completely realized, and many regiments remained only partially formed.
The companies of the 1st Indiana Legion, acting as Home Guards, were activated as needed for state defense. Their principal service occurred during the Morgan Raid in July 1863, when they were called into action to repel Confederate cavalry and protect local communities. In addition to responding to invasion threats, Legion companies also performed duties such as guarding prisoners of war at Indianapolis and other locations within Indiana. The Legion remained a key element of Indiana’s internal security throughout the war, though its units were not mustered into Federal service and did not serve outside the state.
Research This Regiment Further
If you’d like to explore this unit’s history in more depth, regimental histories and Civil War reference works offer valuable detail.
Engagements & Campaigns
- Defense of Indiana during the Morgan Raid (July 1863)
- Guarding prisoners of war at Indianapolis and other state locations
Casualties
Specific casualty figures for the 1st Indiana Legion are not available in surviving primary sources. As a home defense unit, the Legion’s losses were likely minimal, but detailed records were not maintained or have not survived.
Field Officers & Commanders
- Maj.-Gen. John L. Mansfield (Division Commander, appointed for 1st Division)
- Other regimental and company officers are not fully documented in available sources.
Regimental Roster
The full roster of the 1st Indiana Legion, including officers and enlisted men, is available on the regiment’s roster page. This resource provides names and, where available, additional service details for those who served in the unit.
To view the complete roster, visit the 1st Indiana Legion Roster page.
Sources & References
- The Union Army, Vol. 3 (Federal Publishing Company, 1908): Indiana Legion
- Official Records of the Union and Confederate Armies, Series I, various volumes (references to Indiana Home Guards and Morgan Raid)
- Indiana Adjutant General’s Reports (references to state militia and Legion organization)